Lamp.



W. T. JONES. LAMP.

APPLICATION rum) DEC. 9, 1908.

981,925. Patented Jan; 17, 1911.

UNITED SEATES PATENT OFFICE.

WILLIAM '12. cranes, or human, MICH-IGAN, Assmnor. 'IO mmvxmxms & JONES MFG.

' co, or DETROIT, JMICHIGAN, A CORPOMTION or MICHIGAN.

LAMP.

Bpecification of Letters Patent.

Patented Jan. 17, 191,1.

Application filed December 9, 1908. SerialNo. 463,604.

To all whom it. may concern: Be it known that I, WILLIAM T. Jones, a citizen of the United States, residing at Detroit, in the county of Wayne, State of. 5 Michigan, have invented certain new and usefulImprovementsimLnmps; and I do den-hire the following to be a" full, clear, and exist description-1 of the invention, such as will" enable others skilled in the art to which it appertains to make ma use the same, reference being bad to the accompanying drawings, and tothe figaresbf reference marked thereem, which forms part oithis specification. 1

This hivention relates to new and useful improvements in lam especially designed for use 11 automobt sand motor whales, and consists in the construction ma arrangement of partdhgreindfter more ofully set forth and pointed! outporticularly in the claims. v

The primarj object and the invention is to produce a; lamp of-the character described,- v'vherein the arrangement is such as to facilitake the assembling-of the ports, f'sn'd pro vide form joining the parts of the lamp to form a complete stmcture, as to enable the lamp to stand the jar and vibration incident to its usein connection with motor vehicles.

A further object is to provide for securely thee bumerin a manner to enable the adjustment thereof for the purpose of regulatin thefocusof-the'lamp. i

.A hurt or object is provide for securin tfilthedoor-so as to reduce the width thereo ;1

to retainthe glass securely, therein, and at some time preserve a comparatively smooth exterior.

so through the'cylindrical bod'yof on nits g and through the ventilating pen-e1 and th hood or heat cap, saidpnnel and cap being detached from the body of the lam Fig. 5 ,is a plan view-of the heat cap. ii is ,5! aflgphm View ofthe ventilating puncl. Fig.

apertures 92 near each end. These a on tures are so positioned as tore 'Stcr won- I the bodyis rolled into cylin riedl form,

4 of the 7 is sceutrcl longitudinal section through the lampfthe burner appearing in elevation. Fig. 8 is a fragmentary view In perspective of a portion of the door showing sad part in a partial state of completion.- Fig. 9 is a similar view showing said part completed in a manner to conceal the exterior bead formed thereon .when making the internal channel therein, which receives the spring retaining ring that confines the glass in place. Fig. 10.; is 1' horizontal section through the cylindrical body,'showing the manner of adjpnstably-mounting the burner tube thrm gh the lowen-arc'thereof Fig. 11 is a detail in perspective of one of the lugs carried by the body on? the lamp which re ceives one of the flocks of the lump bracket, showing detached reinforcin late which is se'cnred'to the innerfwel 0 the body and surrounds the opening therein through which said lug protrudes. I

' 1mm been customary in the manufacture of lamps of this'character to join the ends of the cylindricnl body portion by lapping said ends and soldering them together. In soid'method of joinin' the ends ofthe body it was difiicul't to hol them firmly in place during the operation of' soldering-L Any shifting of the end portions while being I sol-dercd would cause a. variation in the 5 diameter of the bodies, making; it uitedifiicult to reduce bodies of a. uni orm diameter, on causing a'great deal of trouble and annoyance wheunssmibling the parts of the lamp. To insure the formation of bodies of a uniform diameter, the bhtnks 1,

from which the bodies are formed when stamped out by means ofsuitabledies, are "'A further-object is to strengthenthe' well provided simultaneously with a: am of 96' with the a ertures 3 in the flanged margins o'ocl or heat ca which is also formed by suitable dies 21' which is placed uponjhe upper are of the body of the lamp and. is secured in'pl'mce by rivets 6, as'shown in'Fi Lovrhichpass through the a ertnres int-t e flanges of said cap and through the a erturesil m the body, whereb the ends 0 the body are joined throngh t' medium of said cap, insuring lamp bodies of a uni-- form diameter. Thehood ats will be seem, is .providcdin its vertical walls with open ings 7 for the escape of the caloric cumnt 118 I from the burner within the flame chamber, said caloric currentfinding its way into the hood throu h the opening 8 in the body of the lamp, ormed by cuttingaway a pot 'tion of the material of the body at the ends,

as clearly shown in Fig. 3. The marginal portions of the opening 8 at the side are turned upwardly to form vertical flanges'9 (see Fig. .41) which serve as guards to prevent entrance into the body of the lamp of. any substance which might pass through the.

openings 7 in the hood.

At the time the blank is struck out from which the body of the lamp is formed, in

addition to the apertures 2 and openings 8, there are formed in said blank the openings 10 surrounded bythe rivet apertures 11, the rows of ventilating openings 12, the parallel slots 13, the oblong opening 14 hetween-said slots the rows of rivet apertures 15, and the row of openings 16 along one margin of the blank into each of which extends from one side, a tonguelike-member 17. The purpose of the apertures, openings, and'slots in the blank of the body just described will be hereinafter fully explained. The ventilating openings 12 which are formed through'the lower arc of the body of the lamp are for the purpose of supplying air to the interior of the lamp body or flame chamber in a suflicient quantity to support combustion and prevent the temperature in. the flame chamberrisin to an excessive degree. For the purpose 0 coveringthe ventilating apertures 12 but at the same time providing for the entrance of air thereinto,- a panel. 18 is employed having the outwardly curved portions 19 that lie.

over the rows of apertures 12, said outwardly curved portions being 0 en at their opposite ends, they serve as inclosin passages through which air may enter tie ventilating openings 12. The

be noted 1; at the 1am weakenedby forming erein the apertures 12, the slots 13 and the opening 14. The

panel 18 which is secured at its opposite ends to the body of the lamp on opposite sides of said openings and slots,- serves as a reinforcement which strengthens the wall of the body at that point.

The burner 24. within the flamechamber is of the type commonly employed for burn-- ousings or I .refiector enterin or-tion.

ing acetylene gas and is mounted upon a .stem 25 which passes through the opening 23 in the panel and the reg stering opening 14 in the body of the lamp,'said stem carryin% a rectangular plate 26 which lies upon an of the lamp body. Attached to the lower or outer end'bf the stem 25 whichprojects through the body of the lamp is a fitting 27 to WlllCh is connected a tube 28 for"attaehmgnt of a hose leading to the gas generator, not shown. Because of the fact that the.

stem 25 passes through the oblong .o nings l4 and 23, said stem may be adjusts 101 l tudinally of said openings. To provide! or locking the stem and burner against movement after proper adjustment thereof,

screws 28 are employed which pass throu h" the slots 22 and 13in the capand in t e burner body respectively and screw into the opposite margins of the plate 26, whereby,

.by tightening said screws, the plate 26 may be securel cked inany deslred position.

conforms to the curve ofthe inner wall The re ector 29 which fits into'therear end of the lamp body is a circular disk c0n-' cavo-convex in cross section, provided with the .usual reflecting surface. ;Oonsiderable difficulty has heretofore been x erienced inmounting the'reflector in the odv of the lamp so that its axis will be parallel with the axis ofthe lam body. To insure a per fect positioning 0 the reflector in the rear end of the lamp body, the tongue like them-- bers 17. projecting into the a ertures 16 along the rear mar in' of'sai body are turned inwardly to orm abutments or inshoulders,- as clearly I wardly extendin shown at 1-7 in Big. 4, against which the margin of the circular frame 30 holding the I reflector, is caused to bear as the reflector is laced within the rear end of the lamp body. hese abutments or shoulders prevent the farther on one side than on the other an maih'tain the axis thereof always parallel with the body of the lamp so that the rays of light projected from the concaved face of thereflector are caused to pass through the glass in the front of the lamp at a uniform angle on all sides.

The back of the lamp comprises around cthtiral portion 31 and an annular forwardly extending flange 32 havinga mar inal head 33. The flange 32 of the back 0 the lamp extends over the apertures 16 formed in the wall of the body in produjeing the abutments 17 thereby concealing said apertures. The back may be secured on the rear of the lam body by soldering the flange 32 of the bee to said body through the apertures'lfi; thus avoiding the use of rivets or bolts and 'presenting a smooth external appearance.

' The frontportion of the lamp body consists of a flaring extension 34 which is fittedwithin the forward end of the body of the lamp\and riveted thereto. The outer end of said extension is provided with a bead f01'11'iillg an annular shoulder which serves as a stop a ainst which the door 36 otthe lamp may Said door is hinged to the extension of the body of the lamp,

as shown at 37 in Fig. 2, and comprises a on" cular frame having an inwardly extending glass is. igmfincdbeti'veen thering and the a shoulder or stop39. In forming the channeldl to receive the retaining ring 42, a bond 43 is caused to project from the outer jaceof the cylindrical portion of the door frame. T o cover said head and at the same time strengthen the edge ofthe door frame which eml'iraces the outer edge of the projection of the lamp body, the inner marginal portion lf l'df the door frame is turned outw ivordly. and forwardly onto the main portion thereof so as to form a rolled edgeao for the door frame, and to conceal the bead l3, producing a door WlllClfliS VQIfyl rigid and one whose exterior is comparatively smooth and pleasing in appearance, The abovede-H scribedmet-hod of forming the door frame is clearly shown'in Figs. 8 and 9, 8 slanting the marginal portion 44 extending outwardly before being folded onto the main portion of saidjframe, and Fig. 9 showing said marginal portion folded onto said main "ortion to complete the operation-of forming the structure, r The forks of the lamp bracket, not shown, upon which the lamp ismounjted, are received in the apertured lugs 46' which pass through the/openings 10 (see Fig. 3) in .:-the body oi? the lamp, and eachof which isprovided with aninteflral base flanged? projecting laterally there "rem, parallel with inneriaee ofthe Wall of the body, said Jilangebeing provided yvith a ertur'es as for Elie-reception of rivets whiei. may be employedto secure. said lug inplaee. In order tender-do greater'hearing surface for said lugs and-distribute the strain incident to supporting the lamp over a larger area of the surface of the lamp body, each of said lugs is provided with a reinforcing plate49' havingan aperture '50 therein through which the lug passes, the margins of said platebeing pierced, as at 51, for the receptionof rivets. This reinforcing plate lies against the inner Wall of the lamp body apd betweensaid' wall and" the flange 47 of lug 46, the rivet holes 51 in said plate registering with the holes 48 in the flange of the lug so that said plate may be eecured in pathe sition by the same rivets that are employed to retain thelugin place. -By this arrangement thonva'll of the lamp body is materially strengtheneil at the point-where the strain incident to supporting the lamp is broug'lit to beare v y r I The inovenwut .ot the burner longitudt .nally of the-bod y of the lamp previously re ferred to, is for the purpose of properly focusingthy; hiu'nor Wl-tli.l''Spetttto the re :fleetoe loosening the screws 28", the

burner may be moved longitudinally. of the.

.lamp. body to .otlect such an adjustment thereof as to place it properly in focus, when sa d burner may be secured by tightening I said screws.

The door of rthe lamp is held closed through the medium of a knurled set screw 52 carried thereon which engagesa prop erly formed. bracket 53 mounted on themtension 34 of the lamp body.

Having thus fully set forth my invention,

' what I claim as new and gdesireto secure by Letters Patent, is:-' V a lain a lamp, -a body portion" comprising a strip of sheet metal forming a cylindrical shell orfiaine:ohaniber, said; strip at .the p int of meetingof' itsendsbeing-provided with annp'ertpr'efor'the escape of theta-- loi'ic current, anda ventilated heat e'ap fitted over said opening through which the caloric current may pass, the margins of said cap being riveted to the end portions of the sheet metal strip forming the body, to join said end portions through the medium of saidjcap, and at the same time secure said cap in place over said aperture.

2. In lamp, a body portion comprising a sheet metal strip Whose terminals meet to form. a cylindrical flame chamber, the terminal portions of said strip being aper'tured to'form an opening for the passage of the calorie current from said chamber, and a heat cap mounted over-said opening and rigidly secured to the terminal portions of said-strip to join the meeting ends thereof.

In a lamp, the combination of aeylindrieal lamp body having a reflector in the J rear thereof, said body being provided with vent lating openings through its lower wall, apanel forming housings for said openings,

said panel being rigidly secured to the Wall of the lamp body so that said housings will embrace said yentilating openings, and a burner tube passing through said'panel and the lower wall of the lamp body and ad justably mounted therein.

4.. In a lamp, the combination of a cylindrical body forming a flame chamber, a -re- Hector in the rear of theflame chamber, said body haylng rows of ventilating; openings through vits lower side, a single piece panel forming housings-which embrace said ven- Y the body of the lamp and said panel having registerlng slots therein, a burner tube passing throu 1 two of said re isterin slots,'a plate rigi l secured to said tube wlthin the flame chamberfand screws passing through other of said registering slots and engaging in said plate. y

5. In a lamp, the combination of a cylindrical body having inwardly projecting shoulders formed near the rear end thereof and disposed in circumferential-alinement, an independent reflector mounted in the rear end of said body and engaging said shoulders to aline its axis with the axis of the body, and a back independent of the reflector closing the rear of the body opening.

6. In a lamp, the combination of a cylindrical body having shoulders struck inwardly from the material of said body and located in circumferential alinement near the rear end of the body of the lamp, a re fiecto-r placed in the rear end of the "lamp body against said shoulders, and a back c10sing the rear end of the lamp body having a marginal portion which extends onto the bodyof the lamp and closes the openings therein formed by striking said shoulders from the material of the body.

7. In a lamp, the combination of acirglass, a glass disk lying against said stop,

the cylindrical ortion of the door frame havin a-channe ,a spring retaining ring in said 0 annel confiningsaid disk between it and said step, the rear marginal portion of the cylindrical part of the door frame being turned outwardly and forwardly onto the body portion thereof to stren then the edge of the frame and conceal the d produced by forming the channel in which said retaining ring lies.

8; In a lamp, the combination of a c lindr'ical body portion forming a fiame o amber, said body portion being provided in its opposite sides with apertures, flanged lugs having sockets for the lamp bracket passed through said apertures, and reinforcin plates between the flanges of said lugs and the wall of the lamp body.

In testimony whereof, I sign this specification in the presence of two witnesses.

WILLIAM '1. JONES. 

